9835878972 has 48 divisors (see below), whose sum is σ = 24310208160. Its totient is φ = 3084521472.

The previous prime is 9835878971. The next prime is 9835878991. The reversal of 9835878972 is 2798785389.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9835878971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 586804 + ... + 603332.

It is an arithmetic number, because the mean of its divisors is an integer number (506462670).

Almost surely, 2^9835878972 is an apocalyptic number.

It is an amenable number.

9835878972 is an abundant number, since it is smaller than the sum of its proper divisors (14474329188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9835878972 is a wasteful number, since it uses less digits than its factorization.

9835878972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19470 (or 19468 counting only the distinct ones).

The product of its digits is 60963840, while the sum is 66.

The square root of 9835878972 is about 99175.9999798338. Note that the first 4 decimals coincide. The cubic root of 9835878972 is about 2142.5833485945.

The spelling of 9835878972 in words is "nine billion, eight hundred thirty-five million, eight hundred seventy-eight thousand, nine hundred seventy-two".